Share 'New Photos: Kristen Decked Out in All Black Costume'

See more photos at Gossip Girl.
Continuing along with a long day of work, Kristen Stewart hit the set running as she played Joan Jett in “The Runaways” on Monday (June 22).
After arriving in casual garb earlier in the day, the “New Moon” actress changed into a black leather ensemble - finally getting to put her preparation to use, as this was the first day that she filmed scenes for the…